基于RS-485主从通信协议的改进

Improvements in Master-slave Communication Protocol Based on RS-485 Bus

该文提出了一种新的基于RS-485网络通信协议运用方式,改传统的主机到从机的轮询模式为从机到主机的"轮报"模式。这种新的模式在保证RS-485网络正常通信的基础上,提高了系统的实时性。

This paper presents a new network communication protocol based on RS-485 bus used to change the traditional polling mode for the ＂Rotation ＂ mode.The ＂Rotation＂ mode can improve the system＇s real-time performence,in the same time to ensure the normal communication of network based on RS485.